TI-89 Series
The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from most other TI graphing calculators by their computer algebra system, which allows symbolic manipulation of algebraic expressions——equations can be solved in terms of variables, whereas the TI-83/84 series can only give a numeric result.
Read more about TI-89 Series: TI-89, TI-89 Titanium
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